3 ms·
This looks like another case of correlation != causation. Physical health (e.g. absence of disease) of the male birds is one possible lurking variable: good hea
by lunchbox 17y ago
This looks like another case of correlation != causation. Physical health (e.g. absence of disease) of the male birds is one possible lurking variable: good health keeps one's brain performing better, and it also makes one more attractive to the other sex.
- DrJokepu 17y agoI agree with you in that correlation is not causation but I think you're overcomplicating things a bit in your example; birds don't have a healthcare system, they're either completely healthy and fit or get killed by a predator or by their inability to migrate or some other external factor relatively quickly.